Add Asciinema integration (#326)

* Added Asciinema integration

* Added CHANGELOG entry

src/components/editor/markdown-renderer/replace-components/asciinema/asciinema-frame.tsx

@@ -0,0 +1,19 @@
+import React from 'react'
+import { OneClickEmbedding } from '../one-click-frame/one-click-embedding'
+
+export interface AsciinemaFrameProps {
+  id: string
+}
+
+export const AsciinemaFrame: React.FC<AsciinemaFrameProps> = ({ id }) => {
+  return (
+    <OneClickEmbedding
+      containerClassName={'embed-responsive embed-responsive-16by9'}
+      previewContainerClassName={'embed-responsive-item'}
+      hoverIcon={'play'}
+      loadingImageUrl={`https://asciinema.org/a/${id}.png`}>
+      <iframe className='embed-responsive-item' title={`asciinema cast ${id}`}
+        src={`https://asciinema.org/a/${id}/embed?autoplay=1`}/>
+    </OneClickEmbedding>
+  )
+}